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Internet # 315286139

Model # 950080RZ-10

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Centennial Rubbed Bronze, Extra Large, Steel Mailbox and Decorative Post Combo Kit

$134.99
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  • Kit includes mailbox, decorative post and mounting hardware
  • Rust-resistant galvanized steel construction
  • Large mailbox capacity for high volume deliveries and packages
  • View More Details

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Product Details

About This Product

Meet the Centennial mailbox and post kit, an extra large mailbox built to handle it all - packages, letters, and every delivery in between. This mailbox and post kit includes our Centennial mailbox, matching post and mounting hardware for a complete, easy-to-assemble setup that comes together in no time. No guesswork, no extra shopping trips. Crafted from heavy-duty, powder-coated steel, this metal mailbox combines durability with design to create a bold, modern curbside mailbox that elevates any home's first impression. USPS approved and designed to meet the newest T4 size (the one mail carriers actually prefer), it's roomy enough for oversized deliveries and built tough for daily use. Rain, shine, or package overload, the Centennial Next Generation mailbox and post kit can handle it all. This steel mailbox is strong, stylish, and built to outlast the elements while keeping your mail safe and dry. It's the mailbox with post upgrade your front yard's been waiting for.

Highlights

  • Skip the stress of mixing and matching, this mailbox with post for outside is designed to fit together seamlessly
  • Galvanized steel construction makes this mail box one of the most reliable metal mailboxes for outside use
  • Tough powder-coat finish, adding an extra layer of protection to this curbside mailbox with post
  • Extra large mailbox with post offers oversized space for multiple large packages plus all your other curbside mailbox deliveries
  • Mailbox is USPS approved as required for all curbside delivery by U.S. Mail carriers for smooth, uninterrupted service
  • Includes all required hardware, clear instructions, and access to an easy step-by-step video to guide you through the setup with confidence
  • Secure magnetic closure keeps mail box door tightly shut to protect your curbside mailbox deliveries from wind and rain
  • Iconic, timeless post mount mailbox style complements both new and historic homes, making it a versatile choice for any setting
  • Thoughtfully engineered with a focus on durability, function, and style
  • Sleek magnetic door closure provides reliability all while keeping door firmly closed
  • Approved by the US postmaster general
  • Includes mailbox, post, assembly hardware and installation instructions
  • Concrete footing is highly recommended for cantilever style posts
  • Limited lifetime structural warranty
  • 100% satisfaction guaranteed
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 315286139

Model # 950080RZ-10

Specifications

Dimensions: H 64.0 in, W 14.3 in, D 18.3 in

Dimensions

Assembled Depth (in.)

18.3 in

Assembled Height (in.)

64.0 in

Assembled Width (in.)

14.3 in

Details

Access Type

Front Only

Assembly Required

Yes

Color Family

Browns/Tans

Features

Corrosion Resistant, Decorative, Fade Resistant, Outgoing Mail Indicator

Hardware Color Family

Bronze

Hub Required

No hub connection available

Included

Assembly Hardware, Brackets, Mailbox, Mounting Hardware, Posts

Mailbox Capacity (cu. in.)

2176

Mailbox Size

Extra Large

Mailbox Style

T4

Material

Galvanized Steel

Mount Type

Post Mount

Post Installation Type

In-Ground

Post Material

Steel

Product Weight (lb.)

21.69 lb

Returnable

90-Day

Security

Non-Locking

Weight Capacity (lb.)

50

Warranty / Certifications

Manufacturer Warranty

5 Year

U.S. Postmaster General Approved

Yes

Questions & Answers

Is this mailbox USPS approved?
ByNov 9, 2026
1 Answer | 
Answer This Question

Thank you for your interest in our products. Yes, all of our mailboxes that are required to be “USPS Approved” are formally reviewed by USPS Engineering and officially approved by the U.S. Postal Service

By|Nov 10, 2026


    Does this mailbox come with a flag - the flag attached to the side to raise when sending mail.
    ByOct 8, 2026
    1 Answer | 
    Answer This Question

    Thank you for your interest in our products. Yes the outgoing mail flag is included with the mailbox.

    By|Oct 9, 2026


      Can I swap out the mailbox portion of this package for a large sized box? I didn’t realize that extra-large meant ridiculously jumbo. I had somebody install it today and now I’m stuck with an embarrassingly huge mailbox. Can I replace it with something sm
      ByMar 11, 2025
      1 Answer | 
      Answer This Question

      Thank you for your interest in our products. Please contact the place of purchase.

      By|Mar 11, 2025


        How does the mailbox due in various weather conditions? Is it rust proof?
        ByFeb 1, 2025
        2 Answers | 
        Answer This Question

        They don’t do well in hurricane prone areas like Florida. We’ve been through 2 hurricanes and our post rusted out. The pins on the door broke off in the first year. We’ve had the mailbox for 2.5 yrs & have to replace it.

        By|Oct 23, 2025

          The Centennial is powder coated and should withstand various weather conditions. Please visit the below link to our website for Care and Maintenance. chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.architecturalmailboxes.com/wp-content/uploads/2023/01/Care-and-Maintenance-Instructions.pdf

          By|Feb 10, 2025


            The screws are exposed inside so there is not a flush, smooth bottom. Other brands have a molded piece to fit over exposed screws ensuring a smoother surface.
            ByJul 19, 2024
            1 Answer | 
            Answer This Question

            This mailbox model does not have a molded piece to cover the exposed screws on the interior bottom.

            By|Aug 10, 2025

            (1)

            Can u get the mail from the back of the box ?
            ByFeb 29, 2024
            2 Answers | 
            Answer This Question

            The Centennial Mailbox only has a front opening door.

            By|Feb 29, 2024

              The Centennial Mailbox only has a front opening door.

              By|Feb 29, 2024


                My mailbox post wobbles because the screw holes in the inner cylinder are oval not round! This seems to be a design issue. How can I fix this?
                ByDec 22, 2023
                3 Answers | 
                Answer This Question

                How to fix this problem! The mailbox base is very loose.

                By|Aug 13, 2026

                  Please reach out to us directly, Support@ArchitecturalMailboxes.com

                  By|Feb 28, 2024

                    Please reach out to us directly, Support@ArchitecturalMailboxes.com

                    By|Feb 28, 2024


                      What size numbers fit best on the mailbox?
                      ByOct 19, 2023
                      2 Answers | 
                      Answer This Question

                      12.5"W x 4 5/8"H is the size of the space on the sides of the mailbox.

                      By|Oct 19, 2023

                        12.5"W x 4 5/8"H is the size of the space on the sides of the mailbox.

                        By|Oct 19, 2023


                          Viewing 1-8 of 14

                          Customer Reviews

                          4.3 out of 5

                          • 4.3 out of 80 reviews
                          • 95% recommend this product
                          Filter by:
                          Showing 1-10 of 80 reviews
                          This mailbox is a great value for the cost. I didn’t want a plastic mailbox but I also didn’t want to spend a fortune and this was a great option. The box itself is very large, can easily fit packages. I love the look. My only complaint is the base is a bit wobbly.
                          by
                          Decent
                          I like the look and size and easy to install. Don't even consider not using concrete for the post. It needs it. Not super high quality but It seems to be decent besides the plastic base. One problem that bugged me is the post. The first step is sliding the two post halves together and securing with three bolts. Problem is even when bolts are tightened, theres still movement between the two halves. So even if the bottom half is secure in concrete, the thing still is wobbly. Very annoying design flaw. I suggest adding polyurethane construction adhesive in between the two halves as well as the three bolts. That or add a few self tapping metal screws to help secure.
                          by
                            • Recommended
                            This mailbox is the worst contraption ever! This thing is WOBBLY and UNSTABLE!! Please, I want my money back and the money I spent on the installation
                            by
                            • Verified Purchase
                            1 found this review helpful
                            Love this Mailbox! It was so easy to install and it looks so nice in front of our house. It’s the...
                            Love this Mailbox! It was so easy to install and it looks so nice in front of our house. It’s the size I was looking for and I’m so happy with it! Definitely recommend!
                            by
                              • Recommended
                              I've been waiting to move into a new home to install this very nice, Centennial, Extra Large mail...
                              I've been waiting to move into a new home to install this very nice, Centennial, Extra Large mailbox. It includes all the necessary mounting plates, pole and trim pieces. This is a heavy-duty mailbox. No flimsy sheet metal here. It's also large as you can see in the photos with the measuring tape. This should fit just about anything you'll need to have stuffed in the mailbox. The fit and finish are first rate. All of the pieces are trimmed nicely. Everything fits together well. I'm guessing this will be extremely sturdy once the pole is firmly placed in ground and the mailbox attached. My only criticism of this box is there is nothing to secure the door to the box when it's closed and the friction fit is rather loose. I'm going to have to tweak the edges or figure something else out because I'm afraid the door could fall open.
                              by
                              • Recommended
                              1 found this review helpful
                              Would highly recommend this mailbox. Install was a breeze. There are step-by-step instructions in...
                              Would highly recommend this mailbox. Install was a breeze. There are step-by-step instructions included that are super easy to follow. It probably took 15 or so minutes to piece together the mailbox, not including install into the ground. There is an oversized area for storing packages and mail, which is super convenient when the weather is poor. Probably the only fault is the bottom portion is plastic. With that said, that doesn't impact the usage and it looks fine & matches with the metal on the rest of the mailbox. It is heavy duty and seems as though it will last for quite some time.
                              by
                              • Recommended
                              1 found this review helpful
                              I’ve been wanting to replace my raggedy plastic mailbox for years with a more sophisticated looki...
                              I’ve been wanting to replace my raggedy plastic mailbox for years with a more sophisticated looking mailbox like this. I do say that doing this project in February in the northeast part of the country isn’t probably the best idea, but I decided to move forward on a day that was at least 40 degrees. Digging the hole was no problem since the ground wasn’t frozen up. Make sure it’s at least 12” deep and use a sack of “post setting” concrete mix, as it sets up quicker than normal cement. Once I set the post, I insulated the concrete with a moving blanket and threw snow back on top. I then gave it 24 hours to set up due to the cold weather. Fill your hole halfway with water before gradually adding the cement mix. Important note: per the directions; be sure the post is oriented properly before cementing by using the mounting bracket and confirm the bolt hole locations since the holes in the post are low on one side and high on the other. I see no reason for this difference in height on each side, but it is crucial that you use the bracket to check alignment of the box. Mine would have faced the driveway if I hadn’t double checked. The remaining installation was simple and swift. The door is magnetic to keep it securely closed which is a nice feature. The poles and box are made of galvanized steel which has excellent corrosion resistance and a lifetime warranty. The box is very large so it should accommodate most smaller parcels and with the inside dimensions are 13” wide and 10.5” high. The rubbed bronze color is very rich and looks great.
                              by
                              • Recommended
                              1 found this review helpful
                              This ARCHITECTURAL MAILBOX is extra large at 10"H X 14"W X 18"D will hold a lot and all the mail ...
                              This ARCHITECTURAL MAILBOX is extra large at 10"H X 14"W X 18"D will hold a lot and all the mail carriers will love you. It's all metal (handle and flag too) except for the two plastic covers. The mailbox weighs 12 lbs. and the pole another 6 lbs. The directions are easy to read and assembled with the hardware supplied it is a sturdy unit, just needs to be cemented in the ground.
                              by
                              • Recommended
                              The Centennial Black Extra Large Parcel Mailbox plus Post Kit, by Architectural Mailboxes is a ve...
                              The Centennial Black Extra Large Parcel Mailbox plus Post Kit, by Architectural Mailboxes is a very solidly built steel mailbox and post. The 3” post comes in 2 sections for a total length of 52.5”. The X-Large mailbox has an outside measurement of 14.2” wide x 10.9” high x 18.3” deep from outside of handle to rear. The inside measurements are 13.2” wide x 10.5” wide x 16.3” deep. The mailbox is mounted to the steel post with a metal bracket that fastens to the underside of the mailbox with screws (provided). Please follow the included assembly instructions sheet. The sheet is 2 sided but are very concise. Prior to installing the mailbox to the post, the post has to be mounted in the ground, preferably in a concrete base to give it the needed stability. According to US Postal Regulations, the mailbox is to be 41” to 45” from the road or ground surface to the bottom of the mailbox. You must allow an additional 1” for the bracket when calculating how deep to bury the post into the ground/cement. Be sure the post is perfectly plumb on all sides. When the post is plumb then the mailbox will be level. Slip the plastic bracket over the top of the post, then install the metal mounting bracket onto the mailbox and post. The plastic bracket is to be slid up to provide decoration. Another plastic decorative post cover is provided to cover the base of the post. The mailbox also includes a gray-metal 7.5” flag. This is attached with 2 bolts that could be removed if you prefer to paint it red. This is a very nice, heavy, well-built mailbox and post that will last you for years of use. It will look very nice in front of our home. Made in China.
                              by
                              • Recommended
                              I'll be quite honest here, this is a very large mailbox! lol this thing will hold all your weeks ...
                              I'll be quite honest here, this is a very large mailbox! lol this thing will hold all your weeks worth of mail and packages, and probably still have room leftover. You can see in one of my pictures that a standard mailbox fits inside with ease, and that the centennial mailbox is doubled in size. Solid construction in the box and post. This will definitely add top notch curb appeal to your home.
                              by
                              • Recommended
                              Showing 1-10 of 80 reviews

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                              Product Snapshot

                              Ideal for homeowners needing extra-large capacity and weather resistance, ensuring secure mail and package delivery.
                              Great for homeowners looking for a classic, large capacity mailbox, making mail organization easier.
                              Ideal for homeowners needing extra-large capacity and weather resistance, ensuring secure mail and package delivery.
                              Ideal for secure mail delivery with a large capacity and weather-resistant design. Upgrade your curb appeal with this stylish and functional mailbox.

                              Mailbox Capacity

                              2176 cu. in.
                              1097 cu. in.
                              2176 cu. in.
                              1250 cu. in.

                              Package Delivery Compatibility

                              Weather Resistance

                              Locking Mechanism

                              Rust-Resistant